MIPS: [turbofan] Also optimize unsigned division by constant.

src/compiler/mips/code-generator-mips.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/mips/macro-assembler-mips.h"
@@ skipping 170 matching lines @@
     case kMipsSubOvf:
       __ SubuAndCheckForOverflow(i.OutputRegister(), i.InputRegister(0),
                                  i.InputOperand(1), kCompareReg, kScratchReg);
       break;
     case kMipsMul:
       __ Mul(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
     case kMipsMulHigh:
       __ Mulh(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
+    case kMipsMulHighU:
+      __ Mulhu(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
+      break;
     case kMipsDiv:
       __ Div(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
     case kMipsDivU:
       __ Divu(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
     case kMipsMod:
       __ Mod(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
     case kMipsModU:
@@ skipping 758 matching lines @@
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8